Push folders not saving on SM-N986U

I have searched extensively and I can’t find the answer to this. I’m using a Samsung Note 20 ultra 5G phone. I’m checking off enable push on first level folders and when I go out of the settings and come back in it is not saved. I have tried to play with turning on auto sync but that doesn’t seem to help. any pointers of things that I can check to make push folders work?

Chances are your server doesn’t support the IDLE extension necessary for Push. Improving the UI so the Push option isn’t offered when that’s the case is on our TODO list.